Among the viruses responsible for the emergence of human tumor viruses should include direct action - papilloma viruses, which are the causative agent of cervical cancer, and contain their own transforming genes, two types of DNA-containing viruses - hepatitis B virus associated with tumors of the liver, and two herpes the virus - Epstein-Barr virus associated with nasopharyngeal carcinoma and Burkitt's lymphoma, and on the background of immunodeficiency leads to the development of lymphoma, and herpes virus type 8 associated with Kaposi's sarcoma. Among the viruses responsible for the emergence of human tumor viruses should include direct action - ...